BACKGROUND The aim of this study was to assess the effect of diet supplementation with L-ascorbic acid (500 mg/L), tocopherol (3 mg/kg b.w.), and/or a water soluble analog of tocopherol (Trolox) (48 mg/L) on ion transport in the colon of rats subjected to a chronic exposure (9 months) to 0.1% lead acetate in drinking water. MATERIAL/METHODS The electrophysiological parameters of the colon wal...

A study concerned with the effects of iron on chlorophyll, acidity, ascorbic acid, and carbohydrate fractions of Ananas comosus was reported in a previous publication (35). Also, the effects of different amounts of potassium on growth and ash constituents of the same plants were reported in a former paper of this series (36). This study is concerned with the effects of potassium on chlorophyll,...

The effects of non-enzymatic antioxidative compounds such as ascorbic acid, thiamine HCl and β-carotene were investigated on salt stressed maize plants. The maize plants were sprayed with 100 mg L of ascorbic acid, thiamine or β-carotene solutions once a week, up to harvesting of plants. The treatment of NaCl was initiated 25 days after sowing by irrigating the plants with 125 mM NaCl solution....

effect of three different levels of fe-eddha foliar application and soil application of nitrogen on some quantitative and qualitative characteristics of apple (cv. fuji) grafted on maling-9 was evaluated. this experiment carried out at the experimental field of tehran university, in 2013. the factorial experiment was carried out as randomized completely block design (rcbd) with three replicatio...

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Introduction: The influence of ascorbic acid on the nicotine-induced conditioned place preference (CPP) and behavioral sensitization was investigated in the present study. Methods: In a pilot study, place conditioning and locomotor activity were investigated after nicotine (0.25, 0.5, 0.75, 1, 1.5 and 2 mg/kg) or ascorbic acid (1, 10, 100 and 1000 mg/kg) administration. Different doses of a...

Dry matter, organic acids, ascorbic acid, minerals (nitrogen, phosphorus, potassium, calcium, magnesium, sodium) and polyphenolic profile of a number of non-traditional fruit species and their genotypes, namely blue honeysuckle (Lonicera spp.), Saskatoon berry (Amelanchier alnifolia), black mulberry (Morus nigra), Tomentosa cherry (Prunus tomentosa Thunb.) and jostaberry (Ribes nigrum x Grossul...

Wounding of fresh produce may elicit an increase in antioxidant capacity associated with wound-induced phenolic compounds. However, there have been no reports on the wounding response of different types of fresh produce. Changes in antioxidant capacity, total soluble phenolics, ascorbic acid, total carotenoids and total anthocyanins were evaluated after wounding in zucchini, white and red cabba...

The aim of this study was to investigate the effect of storage at -4 0 C on the ascorbic acid (vitamin C) content of grapes (Vitis vinifera) for 1, 2, 5 and 8 months. A sensitive UV-VIS spectrometric method based on Prussian Blue reaction was applied for vitamin C determination and some kinetic calculations were presented. The varieties of red and white grapes used were from Murfatlar vineyard:...